Device for making armature coils



G. TowNsEND -DEVICE FIOR MAKING ARMATURE COILS July 3; 1923` Filed July 12, 1921 b 42 sheetssnaai Eff July 3, 1923.

' 1,460,737- G. w. TGWNSENDy v y DEVICE FOR MAKING ARMATURE COIL`S l Fi1ed July 12. 1921 2 sheets-sheet 2 Patented July 3,1923.

nire stares rri Geenen W. Tovfnsnnn, on sr. Ariaans; NEW lvoisin i L DEVICE FOR NIAKING ABMATURE Application flied any i2, 192i. serial no.

To @ZZ ywhom if may concern:

Be itknownthat I, GnonenlV. TOWN- vSEND, a citizen of ltheUnited States, and resident of P arlr Place, St. Albans, inthe county of Queens'and State of New York, have invented certain new and useful lin- `provemcnts in Devices for ll/lakin'n' firmature Coils, of which the following;` is a speciii'cation.

This invention relates to a device for producingyimproved armature coils. l

f. Heretofore armature coils for dynamo'- electric machines have been known `to be produced by shaping' themV on so-called forming blocks, and there havebeen various improvements invented'for overcoming` the oldmethod of producing' the form-Wound armature coils. n

The present invention treats a similar sub'- ject but comprises marked improvements over the nen7 developed methods noiv in use, and due to these improvements my method differs fundamentally from theprescnt employed methods, in so far that, after Wire has been Wound on Winding` posts,` forming a plane coil, the latter is released from the device upon Which the Wire, forming the coil, has been Wound preparatory to opening the coil. The end loops or noses of the plane coilare reclamped so that the vWire loops are held together durine; the opening operation in such a. manner that the wire between the noses` is bent at a clampinfT line. which coincides Wit-h the tangent passing through the outermost point of the inner periphery of the smallest Wire loop of the nosesmvhich point lies in the longitudinal center line ofy the voriginal plane coil. y

The coil produced by the'above method has many advantages over any coil heretofore produced.` One of these advantages is that the long' noses resulting' from the here` tofore employed methods of forming' coils are entirely eliminated by my process, thereby saving space inthe manufacture of motors or dynamos. Aside from this fact, coils produced by method are exactly alike in shape and dimensions, When a plurality of coils is produced at one setting` of the device by Which my method is facilitated.

My machine forf producing coils according to my method comprises several new improvements, by means of Which the plane Wound coil may bereadily released from the Winding posts, and includes means by Way coins. f

of which the-released plane coils may` be clamped in the manner described above pre paratory to opening the coils to their final shape.` f "The main objects of `my invention are to.A provide an improved methodof forming;` armature coils, to `provide a. `novel form of an armature coil, vto provide a device by` means ofwhich such l-coil` may be formed While employ-ing my new method, t-o` provide Within such a device means for forminga plane coil, `Whichmeans .are adapted to Yfa.n cilitate the removing of the plane coil, and to provide means for clampingthe noses or end loops of the plane coil preparatory to opening` the coil, so that; during the operation of opening', the Wires are bentr at a tangent passing` through the outermost periphsmallest -Wire loop of the coil noses.y

The foregoing and other'objects Will be more fully apparent from .the following description and the accompanyingrdrawing, formingga part of this specification, and in' which: g p

Fig. l is a partial top View of a preferred form of my device.

Fig. 2 is a sectional 2-2ofFig-l. i' y Fig; 3 is an end elevationof my device. Y Fig. 4 is atop view of inv device as seen duringa the process of spreadingor opening the coil, Y

Fig. 5 is anenlarged ldetail of the nose-of I the coil. i, Y

. Fig. 6 isl a top vievv of the coil formed by my method. v y y Fig. 7 is a topview of alwire guida s 'Fig'. `8V is an end` view thereof.

Fig.. 9 is an elevation of a preferredv form ofa Wire guide.- 1 n 'Fig'. .10 represents a Wireguide'vwithf an exchangeable extending member.

Fig. 11 is a cross sectional through. a preferred form of a` Winding post. f j i yFig. 312 is a top 4view of clamping means. i .i :f

Fig. 13 is afront elevation thereof. Referring to the drawings, numerallnin-y dicates the rotatable head of my device in which is secured a central or guide vbar 2. Associated therewith in near proximity tov head lis a guide frame comprising tv vo angle iron bars 3 and i secured by any conthe coilv nose view takenon line View taken venient means to central bar 2, as indicated at 5.

The angle irons are spaced by bar 2 and by end blocks 6i,` and 7, and 6 and 7, also bolted or otherwise held in permanent con# nection with angle irons 8 and 1.

Inthe tree space between the two bars there are provided winding posts, indicated at 8 and 9, and shown in detail in Fig. 11. Permanently associated with the rotatable member or central bar 2, is wire guide 10, held in place by screws 11 or in any other convenient manner.

The rotatable member 2- is preferably provided with a dovetail guide 12 tor receiving a corresponding` guide portion 13 of wire guide 14, the latter being'Y similarly constructed as wire guidelO, shown in detail in Figs. 7, 8, and 9.

rThe winding posts are adjustable within the slot produced between the angle bars 3 and 4, and may be clamped in any desired position by means of a bolt 15, the head ot" 4which bears against a Washer 16, which washer abuts with the horizontal legs oi Y bars 3 and 1. The main member or body of the post 17 is provided with a iiange 18, which bears against the other legs of angle bars 3 and 4.

The main member is bored and threaded as indicated at 19 to receive the screw por'- tion of bolt 15, by means oi which the main member is clamped to the angle guide trame.

Forming a continuation ot the threaded 'l bore of the main member is a reduced bore 2O for receiving the pin 21 ot' wire receiving means, which comprise the pin 21, a washer-like flange 22 permanentlyv attached. to said pin, and another washer-lile flange As may be seen in the drawing, the pin is slightly smaller in diameter than bore 20, the'purpose of which will be explained presently.

The free end of main stock 17 is provided with an annular groove, indicated at 24 tor receiving a clamp 25 provided with a clamp screw .26, adapted to bear against the recessed portion or main stock 17.

Opposite 'to the bearing point ot the screw, there is provided in the recessed portion ot the main stock, a cut-out indicated at 27 into which tits a movable block 28 adapted to bear against pin 21, and so arranged within the clamp 25 as to facilitate its being moved toward pin 21 by the clamp when screw 26 is tightened. y

In this manner pin 21 may be clamped somewhat out ot center ot bore 20, the latters center linecoinciding with the longiy tudinal center line, ot main stock 17.

For adjusting the distance between washers 22 and 23, pin 21 1nay be set to vdesired.

place by lock nut 30. rlhe feature ot clamping'pin 21 somewhat out ot center within bore 2O becomes ot importance in producing my armature coils, according to my novel process. l

Referring to Figs. 1 and 2, it will be seen that when wire is wound from any convenient source, as for instance a bobbin, around the winding posts 8 and 9, the tension ofthe wire caused bythe winding process tends to bring the winding posts toward each posts, as is the case in similar machines used heretofore. It is obvious that while under tension these devices (pin 21, washers 22 and 23) could be removedA only by driving them out by torce irom'the main stock 17, which not only would be inconvenient, but may affect tle proper formation, particularly the opening ot' the coil. i Y

The above disadvantages are eliminated by providing a loose tit between pin 21 and bore 20 oit main stock 17. Due to this construction, 1 am able to set pin 21, prior to winding the coil, out of center relative to bore 2() by means of set crews 26, so that the pins are moved outwards in the direction' from the longitudinal center line ot' the guide bar 2. Then the pins 21 are thus set, the plane coil is Formed. Prior to removing the plane coil from, the posts, set screws 26 are released, permitting pins 21 to move toward each other, thus relieving the tension between the posts and the end noses of the coil, and facilitating the removal ot the coil vfrom pins 21.

As has been mentioned. before a wire guide 10 is permanently attached to the cen ter or guide bar 2 and comprises in one ot the preferred'forms shownin my drawings, a plate 31, provided with adjustable blocks 32 adapt-ed to be set at any desired position inslots 38 by means of set screws '321. YFao,

ing the blocks angular vguides 35 slidably mounted upon plate 31 and guidedy by means of screws 36 and longitudinal slots 37 anda guide bar v38 permanently vassociated with plate 81. Y j

Accordingv tothe thickness of thewires or the width of the future coil, the adjustable blocks 32 are positioned at a yproper distance from the upturned legs 39 of angular guide' Slidably associated and disposed at theA opposite tace of center or guide bar 2v is .the other wire guide 1li, which issimilar Vin construction to wire guide 10, comprising also a plate 31, having adjustable blocks 32, slidab-ly mounted slots 33 and held in' moving it fromv saidrotatable member and 3. ln an armature coil winding device, a 1

rotatable member i having adjustable, relatively stationary winding posts for facilitatingv the forming of a plane coil, and guided, movable means for clamping lthe ends of i said plane coil when released from said posts and during the operation of openingl the coil.

ll. lin an armature coil winding device, a rotatable member, comprising a Ycentral bar, a guide` frame, adjustable winding posts associated with said frame, a stationary and a movable wire guide mounted upon said central bar; removable clamping means slidably mounted and guided at theends of said guide frame, said' clamping means adapted to receive the ends of the planev vcoil lwound around the winding posts when said coil is detached from saidposts preparatory to being opened. i j n i 5. In an armature coil winding device, a coil winding post, means associated with the latter for releasing' the` tension rdueto winding a plane coil, preparatory to slipping the coil from the winding post.

G. ln an armatureL coil winding device ,foinposedof a coil winding post having a wire receiving means capable of changing their position in outward or inward direction relative to the center of the coil, an individual coilv end clamping 'device adapted' to receive and hold thel arcuated'portions of a coil when released from its winding posts, and preparatory to spreading the coil.

7. In an armature coil winding device composed in parts of a coil winding post, comprising a main member, means for attaching it, a wire receiving member held within saidinain member, means yfor adjustj a wire receiving meinberfcomposed of a 'flanged pin adapted to pass into the bore of said main member, and a washer provided' with an aperture` for receiving the pin, .means for adjusting the position of said pin in axial direction within the mainmember, and means for' clamping the pin within) the main member, saidA clamping means adapted to hold the pin eccentrically` relative to said main member when so, desired.

l9. In an armature coil winding device having a rotatable member provided with winding posts for forming a plane coil, a pair of individual coil nose clamps for receiving and holding the'noses or end loops or' a plane coil when opening the plane coil after removing it from said-winding posts.

l0. In an'armature coil winding device, a coil nose clamp adapted to clamp the noses or end loops or'A a. plane coil during the' periody of opening the coil and comprising a guide member having a stationaryjaw, and

an adjustable and removable jaw, a. coil adjusting pin provided in the latter ljaw, said clamp jaws adapted to provide a bending edge for the coil'noses which edge is disposed at a tangent passing through the outerinost point 0f the inner curvature of the nose, said poi-nt lying in the longitudinal center line of the plane coil.

Signed at New York, in the county of New York and State of New York, this 11th day of July, A. D. 1921.

vesoneri TowNsEND. 

